Year	constant 2015 US$
1993	17162186290.93747
1994	15804225610.722057
1995	16138309131.383583
1996	15389130954.713167
1997	14675429277.852264
1998	15051092769.31169
1999	14137587501.501379
2000	14249931607.094458
2001	13888247342.679804
2002	12863976076.362309
2003	15620220450.844711
2004	16679758128.063946
2005	18024598033.31008
2006	18372141526.015816
2007	19726817223.458813
2008	20184263596.99908
2009	20219811118.27436
2010	22616822345.20111
2011	21568693925.51439
2012	25520436033.773144
2013	28426618999.961235
2014	30513783928.59145
2015	32364345622.455524
2016	31698649821.423042
2017	31327256736.833126
2018	32108467925.51757
2019	33901190577.20321
2020	33585421087.948177
2021	35551654501.30291
2022	37246500798.8374
2023	37904380107.916664